ISL8105BCRZ

DC DC Switching Controllers Overview

The ISL8105BCRZ is a single-phase synchronous buck converter PWM controller manufactured by Renesas Electronics Corporation. It operates from a +5V or +12V bias supply voltage and utilizes voltage-mode control to regulate output voltage with high precision. The device integrates an internal linear regulator, boot diode, and N-channel MOSFET gate drivers to minimize external component count. Key electrical specifications include a switching frequency of 300kHz, a maximum duty cycle of 100%, and an operating temperature range of 0°C to 70°C. It features current limit protection and enable control, housed in a 10-DFN (3x3) package.

DC DC Switching Controllers Feature Summary

• Integrates linear regulator, boot diode, and N-channel MOSFET gate drivers to reduce board space requirements.
• Supports safe start-up with pre-biased load capability for reliable system initialization.
• Provides overcurrent protection by monitoring the ON-resistance of the bottom-side MOSFET.

DC DC Switching Controllers Applications

• +5V or +12V single-phase synchronous buck converter circuits
• General-purpose DC-DC step-down power supplies
• Embedded systems requiring efficient voltage regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'CRZ' indicates the 10-DFN package variant distinct from the BCBZ SOIC version. Confirm RoHS3 compliance status as per the latest datasheet revision. Check for obsolescence notices or PCNs affecting availability. Ensure the supplier provides valid traceability documentation for this discontinued or active part number depending on current inventory status.

DC DC Switching Controllers Selection Notes

Select this component when designing a compact synchronous buck converter powered by +5V or +12V rails. It is suitable for applications requiring integrated gate drivers and simplified bill of materials. Consider the 10-DFN package constraints for thermal management and PCB layout. Verify that the 300kHz switching frequency aligns with the required ripple and efficiency targets for the target application.

DC DC Switching Controllers Part Context

This part belongs to the ISL8105 family of synchronous buck controllers from Renesas (formerly Intersil). It shares core functionality with variants like the ISL8105BCBZ but differs in packaging. The family is designed for simple, cost-effective power solutions using voltage-mode control. It represents a legacy product line within Renesas's broader PMIC portfolio.

DC DC Switching Controllers Replacement Considerations

Direct substitute: ISL8105IBZ. Verify pinout and package compatibility before substitution. Other ISL8105 variants may require schematic adjustments due to different packaging or minor parameter shifts.

DC DC Switching Controllers FAQ

What is the input voltage range for the ISL8105BCRZ?

The device operates from a +5V or +12V bias supply voltage.

Does the ISL8105BCRZ support clock synchronization?

No, the ISL8105BCRZ does not feature clock synchronization capabilities.